rec0.playback-start.
If the -n flag is given, the output will be sorted on the object name instead of the class name, which is the default.
Some objects also implement command interfaces. A command interface is a collection of commands that can be used by an object implementing this interface. For example, breakpoint is an interface that is implemented by objects of the memory-space class. This allows one to write phys_mem0.break 0xffc00 to set a breakpoint in the memory interface.
Objects implementing command interfaces are listed in the second half of output from this command.